Clamp applying tool



Oct. 9, 1945.

s.' PETRIE CLAMP APPLYING TOOL FiledNov. 18,1943

2 Sheets-Sheet l {5 amuallpezrie Oct. 9, 1945, s. P m' 2,386,570

CLAMP APPLYING TOOL Filed Nov. 18, 1945 r 2 Sheets-Sheet 2 Sa'mu Z [Pa Zr 2'6 I Patented Oct, 9, 1945 k Application November 1 This invention relates to'certain new and fuse fulimprovements in clamp applying tools "and more particularly to that-type of tool adapted for closing and. holding-a clamp in such closed condition while applying a lock device to the clamp for holding the same'in clamping'engagement with the object or work -to which it is ap- Animportant object of the invention is topro-- vide' a clamp applying tool" especially'designed for the application of clamps incident to airplane motor mounts and wherein'the' clamps are em-' ployed for anchoring cables, conduits or the like-- to appropriate supports as-wellas for ground ing purposes. I

It is a-further'object of the invention to'provide a clamp applying tool of the foreging char-' acter embodying a pairof clamp engagin'g jaws for moving the bolt-receiving-apertured arms or a'substantia'lly cylindrical split clamp into juxtaposition" for the reception of a retaining nut and bolt combination through said apertured' arms combined with a clamp engaging 'shoe for hold I mg the clamp rigidly supported Within the tool; with devices for restraining 'thetool from releas ing movement-relative to the clamp sothat the hands of the-user arefree for applying thenut and bolt combination. 4

A stlllfurther and importantobject of the in-'- vention is .to'iprovide a clampapplying tool, espe cially designed for airplane motor mounts and 1 wherein the tool embodies a pair of cooperating clamp engaging jaw members with a clamp-en gaging shoe adjustably supported on one 'ofsaid jaw memberswhereby substantially cylindrical orother strap-like clamps of various sizes'may be applied by a standardsized tool upon adjust V ment of. the clamp-engaging shoe tocause vthe" latter to forcefully engage the clamp when the" clamp-engaging jaw members are in their closed positions. a 1' Another object of the invention is to provide a clamp-applying tool for-airplane motor mounts and the like whereinthe tool embodies a pair of pivotally connected clamping' jaws and a pair of pivotally connected handles for the operation of said jaws with a pivotal connection between thehandles and jaws wherebythe longitudinal axes of the handles may be disposed at'a'n angle to thelongitudinal axes of the jaws for the appli-' cation of clamp membersin areas thatwill notaccommodate the full length of the'tool.

" With the above and other objects in view that will'become apparent as the nature of the invention is better understood, the same consists in55- of'lugs s, 1943, Serial No. 510,807

(01. 81- -3) 1 Y 7 u v the novel form, combination and arrangement of parts hereinafter more fully described, shown in the' accompanying drawings and claimed.

In the accompanying drawings: I Figure '1 is a side elevational view of aclamp applying tool constructed-in accordancewith'the present invention, the clamp gripping jaws of the tool being in their "open'positi'on with :a clamp resting on oneof the jaws and adapted to be ymoved to its closed position,

vFigure 2 is a top edge elevational view,

Figure 3is a vertical longitudinal sectional view showing the jaws of the clamp in closed position and engaged with a larger clamp mem- 1 her than illustrated in Figure 1 with the adjustably mounted-clamp-engaging' shoe carried by one of the jaws engaged with the clamp,

Figure --4 is a detail sectional view takenon line 4 -4 of-Figure" 3,-showing the adjustable g mounting for theclamp-engaging shoe,

Figure'5 is a cross-sectional view taken on line 55-of Figure 1, 'showingthe'pivotal connection between the' handles of the tool, 1

' Figure 6 is a detail sectional view taken on line 6-45 "of" Figure 3, showing the pawl and ratchet retaining device betweenthe pivoted handles of the tool for retaining the clamping jaws'in closed position;

Figure 7 is a fragmentary side elevational view,

-30"partly in section,--oia modified construction showing the pivotally connected handles of the tool pivotally connected at their outer ends'to the jaw members with relatively heavy spring ,devices associated with such pivotal connections 3'5 "for holding the jaw members in shifted angular positions relative to the handles, v

Figure '8 showsa modification of the pivotal connection between the handles and jaws wherelongitudinal axes of the 0*in the connection of one handle with a jaw embodies tensioned coacting ribbed and grooved elements, and v e Figure 9 is "a plan view of'the radially grooved washer forming a part of the connection between "the handleand' jaw member shown in Figure 8.

Referring more in detail to the accompanying drawings, thereis illustrated a clamp applying -tool,'es'pecially designed for the application of clamps incident to airplane motor'mounts and 50 said tool may be described as being of a plier 7 type embodying a pair or handles l0 and H shown for purposes of illustration'only as being of channel form in cross-section, with the open sides of the channels facing each other. A pair l2 project from the handle l0 intermedipressure on the'fing'erpiecesl of the pawl will release the latter from the ratchet. arm 21- and permitdisengagement of 1 the tool from: the

mounted-clamps 'a-Inapplyihgclamps for airplane motor mounts,

it frequently occurs that the particular location for 'the mounting of; a clamp will notaccommo date theefull length of a clamp applying tool and to compensate for such work, the-present invention further embodies a clamp applying tool, the structure-of which embodies clamping jaws to whicha-pair-of pivotally connectedhandles are pivotally:v attached so 'thatthe longitudinal axis of the handles may be plaicedat :difierent angles relative to the longitudinalaxis of the pivotally connected clamping jaws to permit the clamping appropriate angle to the jaws. One form of such pivotal connection between the handles and jaws is illustrated in Figure 7 wherein the jaws l5 and II as illustrated in Figures 1 to 6 carry stub extensions [5a and Ila, each stub extension carrying a screw pin 22a directed towards each other with a ball 20a received in a socket 2m in adjacent ends of the handles Illa and Ila to form a universal mounting; relatively heavy coil springs 52 are interposed between the stub ex-5v tensions [5a and Ila and the adjacent handle so that when the handles and jaws are relatively shifted, they will retain such adjusted positions. The spring 40a is disposed between jaw I! and a side arm 31.

Another form of adjustment to vary the angularity between the jaws and handles is illustrated in Figures 8 and 9 wherein the stub extensions [5b and I?!) of the jaws carry pin extensions 53 and 54, each .pin extension carrying a ball 20b for reception in a socket 21b in adjacent ends of the handles li'ib and Ill) providing a universal connection. The connection associated with thestub extension [lb has the pin 54 rectangular in cross-section for the reception of a concaved washer plate 55, the inner face of which is radially grooved as at 5B for the reception of ribs 51 rising from the adjacent arcuate surface of the bearing end of the handle llb, a coil spring 58 being interposed between the stub extension Ill) and washer plate 55 for holding the pivoted jaw members and handles in their angularly adjusted positions. 7

While there are herein shown and described the preferred embodiments of the invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

I claim: Y

1. In a tool for attaching a clamp to an object, wherein the clamp is of strap-like circular form withrnormally :spacedxapertured' arms .carried by themclamp for the attachmentaofi holding means, said toolecomprisingxa' rigid 1 jaw: member and a cooperating .jaw member .pivotedto the rigid jaw member and pivotallyzconnected handles attached to. the jaw'members adapted to move the pivoted jawlmenriberv toward the rigid:jaw member and intoaengagement'with the adjacent clamp arm for juxtaposing the clamp arms :forattachment of the holding. 'means,-; a shoe: plate ;pivotally interposed: btweensaid jaws, means adjustably carried .byithe: pivoted jawmember and-operatively-engaged withlthe-shoe plate for moving with the :latt'er into ehgagement with the clamp in? spaced relation .to the 'clamp arms-for holding theclamp rigidly supported in thejaw members. 2-. .In:a tool for attaching-a clamp-toan object, wherein-the: clamp is-of strap-like circular form with normally spaced apertured arms carried by the clamp for the attachmentof holding means, said 'tool comprising afirigid jaw member and a cooperatingjaw member pivotedto the rigid jaw member and: pivotally connected A handles 7 attached to-the jaw'members adapted to move the pivoted jaw member toward'the rigid jaw mem'-' ber andinto engagement with the'adjacent clamp arm for juxtaposing the clamp arms forattach ment of theholding means, a shoe plate pivotally interposed betweensaid jaws,-me'ans adjustably carried-by the pivoted jaw member and oper atively engaged with the shoe plate for moving with the latter into engagement with the clamp in spaced relation to the clamp arms for holding the clamp rigidly supported in the jaw members, and coacting' means carried by the handles for holding the jaw members in clamp engaging position.

3. In a tool for attaching a clamp to an object, wherein the clamp is of strap-like circular form with normally spaced apertured arms carried by the clamp for the attachment of holding means, said tool comprising a rigid jaw member and a cooperating jaw member pivoted to the rigid jaw member and pivotally connected handles attached to the jaw members adapted to move the pivoted jaw member toward the rigid jaw member and into engagement with the adjacent clamp arm for juxtaposing the clamp arms for attachment of the holding means, a shoe plate pivotally interposed between said jaws, means adjustably carried by the pi'votedjaw member and oper atively engaged with the shoe plate for moving with the latter into engagement with the clamp in spaced relation to the clamp arms for holding the clamp rigidly supported in the jawmembers,

means for normally influencing the pivoted shoe plate away from the outer end of the rigid jaw member and said adjustable means being operative for limiting retracting movement of the shoe plate and normally setting the shoe plate in positions for clamps of different diameters whereby the shoe plate is positively engaged with a clamp when the pivoted jaw moves the clamp 7 jacent iclampnarmi. iorinxtaposing the. clamp for; attachment. oi ;the-.: holding means, a shoen latepiszotazlly interposedhetweensaid jaws, means; :adiustablycarried. :by: the pivoted; jaw member and. operatively engaged, with. the shoe plate .for moving withthe; latter. into, engagement with thenoilamp inspaced relation tothe clamp arms for holding, the clamp rigidly supported in the iaw members, co-acting means. icaried. by the handles for holding the Jaw. members. in clamp en a in position, means forenormally influencingtthee nivoted; shoe plateaway from the. outer endoi: the. rigid jaw member and saidadjustahlemeans being operativeefor. limiting retractmed-movement of. the. shoe plate and normally setting. the. shoeplate mpositions for clamps of difierent; diameters wherebr. the shoe plate is positively. en aged wit-ha elamp when the pivoted iawmo es the; elaum-eanms into. juxtaposition.

.51. atooliorattaehina agclamp to anioblieet, a iaw amber and ahandle. rigid therewith, a second: aw: member .pivotally. mounted on the r i iawmemberand hB gLD-f arcuate form with the outer eterminal ends thereof adapted .to. be mgs egl intoiziillonimity ,ofr ,thevzother end ,of; the

f i memben. aseeondhandhe pivotall meant-ed: one the rigid. handler. link connections between outer endoi the; pivoted handle. and he n r nd v oiv th pivoted jaw; means for; holdi is; thepwoted; Jaw. in closed, clamp engaging aeeasvo position, a clamp engagingshoe. platepivotally interposed betweenxsaid jaws; and graduated adjustable means. carried by the pivoted jaw engagied with the, shoe plate fornor-mally' positioning the shoe. plate for engagement with a. clamp when theouter terminal, end of the pivoted. jaw member is disposedadjacent the outer end of the rigid jawm'ember.

'6... In a; tool for attaching a. clamp tov an object, a jaw member and a handle rigid therewith, a second jaw 'member pivotally mounted on the rigid jawmember and being of arouate form with the outer terminal end thereof adapted. to; be moved into proximity oftheyother end. of the rigid jaw member, a. second handle pivotal-1y mounted on the; rigid handle, linkconnections between the outer end of the, pivoted handle and the inner end of the pivoted jaw, means. for holding the pivoted jaw in closed clamp-engaging position, a clamp engaging shoe plate pivotally interposed between said jaws,v and graduated ad-- 

